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entrain srA'rns Parana? JOHN GRAVES, U33 MADISON, WISCONSIN, ASSIGNOR TO FRENCH BATTEEY CABBU'H (30., 0F MADISON, WISCONSIN, A COBIPORAEION' OF WISCONSIN.

CORE-TAMPING MACHINE.

Specification of Letters latent.

rarenteanta 2?, isle.

Application filed January 2-5, 1919. Serial No. 213,133.

'1 0 all 'ur/wmit may concern:

lle it known that I, Jenn GRAVES, a citizen of the United States, residing at Madison, in the county of Dane and State of llisconsin, have invented a certain new and useful Improvement in Core-'liamping Machines, of which the following is a specification.

This invention relates to core tamping machines, particularly those in .which more than one tool is required in the tamping operation, or some operation in connection therewith. The object of the invention 1s to provide a machine of this class having a mold for the core, means for ejecting the product therefrom, and a single reeiprocat-' able tool body carried in fixed guides, thereby insuring accuracy, said tool being, at the will of the operator, convertible first into one form of tool and then into another, but this without the use of the objectionable turret wheel, common in the art, rarrying a multiplicity of tools. Th invention consistsin means for carrying out the foregoing objects, which is compact in construction, which can be easily and conveniently made, which satisfactory in operation and is not readil liable to get out of order. Morein detail, the invention consists in the features and details of construction which will be.

hereafter more fully set forth in the specification and claims.

Referring to the drawings, in which similar numerals represent the same parts throughout the scveral views, I

Figure 1 is a vertical front View of mechanism ill'ustratiupthis invention in its preferred form.

Fig. 2 is a side elevation taken at the right hand side of Fig. i.

Fig. is a central sectional view, taken on the line 3-il of Fig. 1.

Fig. -l is a changed position view of the tool member proper. showing the position of the parts with the carbon pencil ready to be inserted in the core.

Fig. 5 is another changed position view of Fig. 3, showing the tool mecl'ianism in the act of finishing the insertion of the carbon pencil in the core.

Fig. (1 is a perspective view showing a bobbin or core ot an electric dry battery, comprising a core, proper of depolarizing material and a carbon pencil embedded therein which the particular machine herein shown as embodying this invention was especially designed to make.

Fi 7 is a changed position View of the re setting lever mechanism appearing in normal position in the upper portion of Fi 1.

The mechanism embodying this. invention is supported upon. a suitable frame which, in the particular form here illustrated, comprises a table 10, an upright column 12, and a depending lug 14 supported from the floor or ground by mechanisn'i forming no partof this invention, and therefore not shown. The column 12 is made ll-shaped, as clearly appears in Fig. 1, to support parallel guides 16 and 1S, whicl'rforin a ertical trackway for a,crosshead 20, supporting the working tool mechanism hereafter set forth. The particular n'leans shown in the drawing for reciprocating this crosshead vertically coniprises a rack on the back of the erosshead with which meshes a segmental gear 2t carried by a shaft 26, journaled in the column 12, and driven selectively at the will of the operator by the use of either one of two handles 28 and 30 mounted forconvenience on opposite ends of shaft 26.

Extending from the front of crosshead 20 is a horizontal lug 32 bored out vertically to form the hole 3% in whose lower end inserted the shank 36 of tan'iping tool 38, de taehably secured in position by any suitable means, as for instance set screw i0. This tampingtool 38 may, if desired, be provided with adetachable re'placeahle worltiup end 2-38 which in the particular case here illustrated, secured in place by screw-threads 12.

The tool 3S -38fl'just referred to, is longitudinally bored to receive a reciprocatable carbon-inserting tool 4+1, whose uppercnd is attached by any suitable means, as for instance the screwthreads l6. to a second crosshead 48 which is reciprocatable in hole 3-H. Pivoted to crosshead l8 by a crank pin 50 is a. connecting rod whose upper end is pivotally connected by a crank pin 5% to a rotatable. disk 56 journaled in a boss on "nl t l .is 1Slaw))1ta c the face o'l erosshead 20. tachably secured in rotatable position in the boss 58 by means of a set screw 60 (l? 3) whose end enters and takes bearingin an annular recess 62 cut in the circumferential face of disk 56. The upper end of connecting rod 52 enters and partially rotates within a slot 6i formed for its reception in substantlally half of: the disk 56. This slot is '1" will vertically "H'illlll and arranged so that partial rotation of the disk 58 will more the connecting mil and attached parts from the full line position of Fig.1 to the dotted line position of Fig. 7, and vice versa.

From the foregoing coi'ietruotion, it will e seen that in either on of the positions inst referred to; rotation of shaft 26, and ironnequently reciprocation of crosshead 20, reciprocate the tool member in and attached parts. W hen connecting rod is in the position shown in Fig. 1 and this ciprocation takes place, the carbon insert- L tool i4; is in the position of Fig. 3, and hen connecting rod 52 is in the position of ig. 7 and this reciprocation takes place, nation-inserting tool &4 is with reference to tool 38 in the position of Fig. 4C.

Disk) is rotatable between the positions gust described through the use of av lever 66 aletaehahly secured to the dish by any suitulile means; as for instance by screw 68. projecting lug on the disk 56 and a pin 1'2 on the hose 58 ei'igageable by said lug 70 serves to limit the are of travel of the disk and. consequently the stroke of the tool 38 and attached parts heretofore described.

fin guide 16 is a stop 'T-l adapted, when engaged by the end 66 of lever {36 while the ports are in the position shown in Fig. 7 and the ero-sshead 20 is moving upward, to, in the manner hereafter described, cause lever 68 and attached parts to return from the position of Fig. 7 to that of 1. V

in a portion of the circumferential face of disk 56 which is; within the boss 58 is a cam face 76 (Fig. 1'). Adjacent to this cam face a reciprocatable rod 7 8 whose head, shown in Fig.1, is pressed by a spring 80 against this cam. face 76. The outer end of the rod.

78 is movable between two positions; that of Fig. l. in which, as the crosshearl 20 re ciprocates vertically, it new n touehes stop 82 on guide 18,2ind that of Fig: 7, in which it is extended so as to engage said stop 82 and limit the downward movement of the tool 38 and attire-her]; pai'le. This mechanism just referred "to is'provided to prevent the carbon pei'ic il being driven too far into the core.

@n the table 10 is secured, by any suitable means, no for instance screw 8- a clamping device adapted lo (letachahly engage and hold a mold member 88, within which the core 90 is adapted to he first formed and thereafter receive the carbon pencil 92. combination bottom and finished work-eject ing member oi. this mold is a reciprocatahle plunger 94, whose lower end is dotachably and adjnstably secured to av horizontal crosshead 96 by a set screw 98, the crosshcad being in turn slidable vertically on rods 100, pro jecting from the bottom of table 10, as shown in Fig. 1 and adjustehly positioned so as to travel thereon by any suitable means, as for The neoeeea instance the look-nuts 102. Q' he plunger 94 may, if desired, be provided with a detachable replaceable upper Working end 94 which 'is in the drawings shown applied through the agency of screw-threads 10%.

Rooiprocatable vertically th rough the table 10 and bracket 1% is a rod 110 whose upper end is attached by any suitable means, as for instance by the screw device 112 to the orosshead 20, so that reciprocation of the crosshead in the manner heretofore described correepondingly moves rod 110. Normally rigid on this rod 110, but detachahly and adjustably secured in position through the olamping bolt 116 is a. bracket arm 118, of such alength and so positioned that, as clearly shown in Figs. 2 and 3, it extends under crosshead 96 and the lower end of plunger 94. Bracket arm 118 carries a vertical rod 120 detachably securable in selecwd position hey any suitable means, as the set screw 12-2. onnecting to the lower end of this rod 120, for instance through the agency of a ring 124- thereon, are two retractile springs 126 whose upper ends are secured to the crosshead 96, heretotore referred to, by any suitable means, as for instance the screws 128' These springs serve the function of normally urging the rod 110 and consequently the crosshead 20, working tool 86 and attached parts upward, thus holding the working-tool above and clear of mold 88 under normal conditions when the operator is not manipulating the shaft 26 through either one of the hand-levers. By loosening the screw 122 and moving the rod 12-0 as desired, the tension of the springs 126 for this purpose may be varied at the will of the operator.

General operation.

Starting with the parts in-the position of Figs. 1., 2 and 3': The operator plaA-cs some of the material to be tamped into the linished core in and 0n t0p of the mold 88. He takes hold of lever 28 and rotates shaft 26 in a counterclockwise direction, thus bringing tool 38 and attached parts down into the mold to lamp the n'iatorial. He may rock the shafthackward and forward for this purpose several times. He then places more material in the mold and repeats this operation until the mold is tanipod full of core material. In the final movement under this operation the core is formed with a. slight indentation in its top due to the projecting end 44? of tool 44- lieingx in the position shown'in Fig. 3, slightly below the normal end of tamping tool 38. llc then brushes away the surplus material from the top of the mold; then takes hold of lever (36 and swings it from the position of Fig. 1 to that of Fig. 7, the tool mechanism thereby assuming the position shown in Fig.4. He then takes a. previously prepared carbon pencil and places it in the bottom end of tool lttl Zlti

lit)

over those of the prior art the case may be.

ncome 38, as shown in Fig. 4C. H e then takes hold of hand-lever iZS'and again rocks shaft- 26 in a counter-clockwise direct-ion thus depressing tool 36 toward the core in the mold 88 until it is stopped at the top of the core by the engagement of rod 78 with stop 82, here-totem described. That is to say, it reaches; the position of Fig. 5, wherein the carbon pencil is inserted in tinal position within the core.

The operator now either pushes handle '28 or pulls handle 'which is provided for the purpose, to rotate shaft 26 in a clockwise direction 'and carries this movement on until rack 22 has moved upward just as far as it can bev made to go under the construction of gear 2i. This movement is suthcient to raise rod lit) and consequently bracket 118 to such a height that plunger 9-2 is moved upward av suliicient distance to eject the finished product in the mold 88. This movement also brings end 66 of lever (it; into engagement with stop 7% so that the upward movement of the crosshead 20 to its extreme upper position (shown in dotted lines in Fig. 1) rotates the lever 66 and consequently disk 56 and attached parts from the position of Fig. 7 back to the normal position of Figs. 1, 2 and iljavherein the machine is ready to repeat the operation.

it is to be noted that the device heretofore described has several distinct advantages Among them are the :t'acts that the crosehead 20 and attached parts move in a fixed guide and the essential tool 38 which is present in all the operations moves fixedly in unison therewith, thus insuring positive, accurate centering and operation of the tool every time it is moved; to change the tool 38 fronra purely tamping tool. it is only necessary to move lever (36, which can be done easily and conveniently, and which does not in any way disturb the accurate operation of themain tool 38; the swdtching of the machine trom the tamping operation to the ejecting operation only requires the reversal of direction or movement of shaft 26. This can be accomplished by the operator without looseniugr his hold upon the handle 28 or 80, as lluc to the presence of the springs 126. all the parts of the machine are prm'tica'lly couutcrlmlauccd so that very itt'lc cli ort is required in its operation.

liaviu r thus described my invention. what 1 claim as new and desire to sccurc by Lettcrs Patent. is:

l. in nwchanism of the class dcscrilwd, a driven member. a. tool rigid with said driven nuimber, and mechanism carried by the driven member for changing the working characteristic of said tool without moving said tool on said driven member.

2. in mechanism of the class described, a reciprocating member, a tool carried by and means carried by the reciprocating member adapted to be moved to vary the character of the working taco of the tool without changing the relationship of the tool to the reciprocating member.

3. In mechanism of the class described, a moving member, a tool rigid with and carried by the moving member, a plunger 1nsidethe tool, and means carriedby the moving member manipulatable by-the operator to change the position of said plunger with reference to the tool.

4. In mechanism of the class described, amoving member, a tool carried by the moving member, a member reeiprocatable with reference to the tool, and means car ried by the moving member for selectively varying the position of the reciprocatable member with reference to the tool.

5. In mechanism of the class dciswibed, a moving member, a tool carried by the moving member, a member adjustable with reference to the tool, means carried by the moving member for adjusting the adjustable member. and'mechanism controlling the amount of such adjustment, for the pnrposes set forth.

ti. lilechauism of the class described, the combination with a suitable support, a member movable with reference thereto, a tool carried by the movable member, a member adjustable with reference to the tool, means carried by the movable member for adjusting the adjustable member, and means on the support changeable by the adjusting mechanism for restoring the parts to a predetermined position.

7. in mechanism of the class described, a guiding mechanism, a crosshead movable in the guiding, mechanism, a tool rigid with the crosshcad, a member reciprtxaitable with reference to the tool, a rotatable men'iber mounted. in the crosshead, a connecting rod bctwccn the rotating member-and the reciprocating member on the tool, and means for selectively moving the rotatable member to adjust the rccipro 'atable member to the tool.

8. ln mechanism of the class described, a guiding: mechanism, a. crosshead movable in the guiding: mechanism, a tool rigid with the crosshead, a member recipromltablc with reference to the tool. a rotatable member mounted in the crosshead, a connecting rod between the rotating member and the rcciprocatable member on the tool, means for selectively moving the rotatable member to adjust the rcciprocatable member to the tool, and means on the guiding mechanism engageable by the rotating mechanism when the crosshead reaches a certain position to restore the arts to ori inal position.

9. In men ianism of t to class described, a

guiding mechanism, a crosshead movable in the guiding mechanism, a tool carried by the crosshead, means for reciprocating the crosshead variable distances, a member-movable with reference to the tool, means on the crosshead for selectively moving said movable member with reference to the tool, and a stop mechanism operated by such movement of the member on the tool to limit the movement of the crosshead.

10. In mechanism of the class described, a guiding mechanism, a crosshead movable in the guiding mechanism, a tool carried by the crosshead, means for reciprocating the crosshead-Variable distances, a member movable with reference to the tool, means on the crosshead for selectively moving said movable member with reference to the tool, a stop mechanism operated by such. movement of the member on the tool to limit the movementof the crosshead, and mechanism on the guide adapted, when engaged, to restore the parts to original position.

11. In mechanism of the class described, a guide device, a crosshead moving on the guide, a tool on the crosshead, a member movable with reference to the tool, a lever mechanism on the crosshead movable to move the member on the tool, a cam oper-- ated by the lever mechanism, a stop operated by said cam to control the movement of the crosshead after the member on the tool has been moved, and means engaged by the lever mechanism, one position of the crosshead. to restore the parts to original position.

12. In. mechanism of the class described, the combination with a suitable frame, a re ciprocatable tamping mechanism, a mold opposite the tamping mechanism, a reciprocatable mold ejecting mechanism. and a single operating mechanism movable in one direction to operate the tamping mechanism. in the mold and movable in the opposite direction to operate the mold ejecting mechanism to eject the finished product from the mold.

13. In mechanism of the class described, the combination With a suitable frame, a reciprocatable tamping mechanism, a mold opposite the tamping mechanism, a reciprocatable mold ejecting mechanism, a single operating mechanism movable in one direction to. operate the tamping mechanism in the mold and movable in the opposite direc during only ger in said mold normally forming the bottom of the mold, a tamping mechanism adapted for reciprocation toward and from the end of the mold not occupied by the plunger, mechanism movable in a given direction adapted to move said plunger toward said'mold, and means connecting said operating mechanism to the plunger so constructed that it" is inoperative while said tamping operation is taking place, but when operated by said operating mechanism while moving in the opposite direction from that required for tamping, is adapted to cause said plunger to eject the finished product from the mold.

15. In mechanism of the class described, a support, a tamping mechanism, a mold mechanism opposite to the tamping mechanism, a product ejecting mechanism in corn nection with the mold, and operating mechaniszn movable from normal position in two different directions; movement in one direction only tamping material in said mold and movement in the opposite direction operatingto eject the product from the mold.

16. In mechanism of the class described, a vertical frame, a shaft in said frame, a lever controlling said shaft, a rack and pinion mechanism operated by said shaft, a cross head operated by said last mentioned mechanism, a tamping plunger operated by the crosshead, a mold adjacent to the tamping plunger, mechanical means for ejecting product from said mold, means connecting said mold ejecting mechanism to said rack and pinion mechanism operative during only one portion of the stroke of said lever for the purposes set forth.

I 1?. la mechanism of the class described, a vertical frame. a shaft on said frame, a lever controlling said shaft, a rack and pin ion mechanism operated by said shaft, a crosshead operated by said last mentioned mechanism, a tamping plunger operated by the crosshead, a mold adjacent to the tamping plunger, mechanical means for ejecting product from said mold, means connecting said mold ejecting mechanism to said rack and pinion mechanism operative one portion of the stroke of said lever. and spring mechanism sustaining and balancing the parts in normal position with the tamping tool clear of the mold, for the purposes setforth.

In Witness whereof, I have hereunto subscribed my name in the presence of two \vitnesses.

JOHN GRAVES. Witnesses:

Onna'r J. Penanson,

Ban PARK.

Ill 

